Respiratory Protective Equipment.

May be of some use -
http://www.hseni.gov.uk/hsg53_respir...nt_at_work.pdf

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Originally Posted by Soredust

May be of some use -
http://www.hseni.gov.uk/hsg53_respir...nt_at_work.pdf

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Good article, but for all you dust mask only users out there take note of Point 3 on Page 5.

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Before using respiratory protective equipment (RPE), exposure should be controlled by reasonably practicablemeasures other than the use of personal protective equipment (PPE). So youshould use PPE only as a last line of protection to control the exposure.

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IN OHS speak this means, either not making the dust in the first place or if that is not possible, setting up a decent DC/ventilation first.